WASHINGTON, Feb 6 (Reuters) - The Federal Aviation

Administration said on Thursday it has begun reviewing airports

with high volumes of mixed helicopter and airplane traffic

nearby after a fatal collision last week near Reagan National

Airport in Washington.

In the aftermath of the crash between an American Airlines ( AAL )

regional jet and a U.S. Army Black Hawk helicopter, the

FAA has imposed significant restrictions on helicopter flights

around Reagan National until at least late February, and two of

the airport's lesser-used runways remain closed.

Senate Commerce Committee Chair Ted Cruz said earlier on

Thursday that he asked the FAA to review other airports with

high helicopter and airplane traffic for safety issues.